JPS60107231A - Circuit breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

Technical Field The present invention relates to a circuit breaker, and more specifically, a main contact and an auxiliary contact! The main contact and the auxiliary contact are electrically connected in parallel via a coil,
Large FF1L? The main contact opened due to curling: 13 (1) is applied to the circuit breaker, which transfers the arc generated at the main contact by the magnetic driving force due to the magnetic flux of the coil to the auxiliary contact and arc extinguishing device. Background Conventionally, in such a circuit breaker, a yoke was interposed in a coil in order to increase the magnetic flux, and this coil was wound around a connecting part that connected a pair of 1v1j parts of the yoke. -, there was a drawback that a sufficient magnetic flux density in the protrusion part could not be obtained due to magnetic saturation of the connecting part.Objective The objective of the present invention CI' is to solve the above-mentioned technical problem,
ArtaliJ? It is an object of the present invention to provide a circuit interrupter 1'h6 with increased power and improved arc extinguishing function. Example FIG.
It is a simplified 1-dimensional view. This J breaker 1 has a synthetic tree 1
A constant contact slope 3 extending along the machine table 2 is provided. The fixed contact plate 3 has its base end 3a connected to the power supply side prong metal fitting 4.
and its free end 3b is bent to 0 or 2. The free end 3b is provided with one main contact 5 consisting of seven constant contacts. This top Azusa point 5
The main 1 & point G, which is another movable 1χ point that comes into contact with, is
The movable contact plate 7 has an angle of 01°11 and is connected to the negative itj side metal fitting. In this way, by bending one part of the fixed contact plate 3 into a U-shape 1i7, the flow between the contact plate 7 and the fixed stirring plate 3'ii
The directions of j fin are opposite to each other, and therefore, the magnetic flux 1 causes a magnetic repulsion force 7ii to act,

[j1 The opening speed of the contact point 7 can be increased. Above the 11th point of the flat plate portion 3C of the fixed contact plate 3 and on the extension line of the free play r++M3b of the fixed contact plate 3, there is a medium
A terminal plate 8 is provided. In this RK ta child board 8
The auxiliary contact 9 is installed at 1.jll. An auxiliary contact plate 10 is disposed above the middle 1 terminal plate 8 in FIG. 1 auxiliary contact 11
will be prepared. In this, A+ ends - f - provisional 8 and 6i
1 auxiliary drive plate 10 is inserted between 1 and 613.14 of the U-shaped yoke 12 so that εI<21=, and is inserted between the auxiliary contact 9 and the center L-1h of this relay terminal board. li
'+ eye 11th board 1I board 10th eye, ton 11 is yaw, ri 12
117111 part 13, 14111tJ. 1 part 13.14i of this yoke 12 is the coil 1
5 is wound. The main contact 9 is electrically connected to the main contact 5 on the fixed contact side,
be sold. Also? iti 11s1y point 11 is iJ1'
It is electrically read directly to the main contact 6 on the moving contact side. To explain more specifically, one breath of the coil 15 is inside IHIfHOm.
Connected to child@8, pond pant or 1. 'tl is connected to the free end 3b of the constant contact plate 3, thereby electrically connecting the auxiliary contact 9 and the main contact 5. Furthermore, an L-shaped piece 16 is provided on the opposite side of the auxiliary movable contact plate 10 from the surface on which the auxiliary contact 11 is provided, and the movable contact plate 7 also has a similar L-shaped piece 16. An L-shaped piece 17 is provided. The L-shaped piece 16 and the L-shaped piece 17 are connected to each other by a braid 8. As a result, the auxiliary contact 11 and the main contact 6
are electrically connected. ? iH aid = r dynamic Azusa point provisional 1
0 and the movable contact plate 7 are connected by a jyro tie piece 9. This connecting piece 19 has a ridge around the peak of 1liLh20a. Therefore, short circuit current,
j! +S load power? When a large current of N and 'S is applied, the main contact 6 and the main contact 5 are IJl, and when performing the auction 2-1 operation, I
jpu', ^l-1-19 by Sodesuke Town moving contact board] 0
The IJl pole occurs. This generates an arc on the side of the auxiliary contacts 9 and 11, so connect these contacts 9 and 11 to tJ.
1g, i gold 11. By using a bow made of, for example, tungsten or its alloy, the occurrence of metal air leakage is reduced, and the airtightness is reduced, which improves the shielding (cow). On the left side of the figure, an extinguishing/claw device 20 is installed.The arc extinguishing device 20 is
Multiple 4'l stacked at regular intervals in the vertical direction of the figure
grid 21. The last grid 21 is +11
It is in contact with the relay terminal board 8 marked J. When a large current such as a short-circuit current, an overload +if', or an i-flow current flows through the circuit breaker 1 having such a +1 envelope configuration, first the movable contact plate 7 on the main contact side performs an opening operation. At this time, during the opening period of the auxiliary contact 11, the contact 19 is connected as described in 1).
Therefore, it is still connected to Yasudasuke Azusa 141==sha=±9. Therefore, the large current is fixed contact plate 3 - coil 15 → relay terminal plate 8 - 7 - auxiliary contact 9 - auxiliary contact 11 - bolt [)J
"I Qij) Contact plate 10- YJi 4'i enemy 1
8- Possible Wfi I'9 Flows through the point plate 7, and the large current is limited by the coil 15. At this time, a magnetomotive flux is generated in the coil 15, and the JB 1il1 flux is transferred to the auxiliary W contact 9.11.
The bale arc current acts to extinguish the arc generated during the arc extinguishing process on the ``1?-1i'720 side''. Figure 3 is a perspective view of the 12-inch yoke.
In FIG. 3, the auxiliary contact 9.11 is in the open state. A temporary coil 15 of 1J is wound around the auxiliary 1 i of the yoke 12; i≦13.14, so the auxiliary contact 9° If
At the time of IIIJiaE, magnetic flux is generated in the direction indicated by arrow 25. The arc is moved in the direction shown by the arrow 26, that is, toward the arc extinguishing device 20 side, by the assistance of the magnetic 1ys1 by this energizing bundle. By winding the coil 15 around the legs 13.14 of the yoke 12 in this way, the magnetic flux density in the air gap of the yoke 12 can be increased, and therefore the arc power is increased by 11q, resulting in better arc extinction ( 41-
I can live with a strong accent. The 41st step I is f/i of the circuit breaker of the present invention (Eastern embodiment).
It is abbreviated 1 analysis and 1 evil. This actual flute example is 1) IJ
Similar to the above embodiment, the horizontal = 11.1::: is indicated by the original sign f = I in Figure 4 for ease of illustration. +li IJO driven contact 7 The movable contact plate and the IQj L/TAIW7+ 14 features related to these have been omitted. It should be noted that in this example, 1
A flat coil 30 is used in place of the coil 15 in the embodiment described in q. This flat coil 30 is 'Q+
51y, the analogy of bending in an S-shape as shown in 1 is moxibustion 1
A flat coil main body 31 consisting of a conductor such as 1) d→superior metal, and a coil main body 31 and a fixed contact plate 3:! ff-
1'17J3b for electrical connection. The coil main body 31 is resistant to heat on one side of the inner part 111f and one side of the insulator 1 and 8, and -1!1:31a is fixed to the inertia element 8 inside by welding or the like. A glue plate 32 is installed on the lower surface of the coil body 31, and is fixed to one end 32a of the 1 piece thick 32 or one end 31b of the coil body 31 by fg bonding or the like. :iA 3
An insertion hole 33 is formed in 2b, and a screw 34 is inserted into this insertion hole 33 to connect the free end 3 of the fixed contact plate 3.
Screw into b. In this way, the auxiliary contact 9 is connected to the main contact 5
Electricity (+6 +) is connected to the opening 35.36 of the coil 30. As shown in FIG. t12 respectively.In this way, in this embodiment, the coil 7 for winding the yoke 12 and the V-plate-shaped coil 30 are used, so that the work is done in one step.
With Mf music, it is possible to achieve a short digit of 1 time. FIG. 7 shows the circuit breaker l11 according to the further embodiment of the present invention.
1 is a simplified view of 1171. This embodiment is similar to the previous embodiment, and corresponding parts have the same reference numerals. What should be noted is lIi and i1 of the yoke 12.
The 1Ill connection part 40 that connects the parts 13°1411'il has a protrusion extending in a direction perpendicular to the longitudinal direction of the connection part 40,
41 is integrally formed, and the transparent portion 41a of this protruding portion 41 extends to the vicinity of the curved portion 3d of the fixed contact plate 3. By providing the 1-kug protrusion 41 in this way, the connection of the yoke 12 +; t < 40 [h(ri+ 4a is J
Therefore, when the current exceeds 1'+ii, +2h junction 4
O's magnetic a, ;Suwa was reoccupied, and thus the north contact point 5
, sky 1 for pivoting the arc governed by 61JIJ;
t, the magnetic flux density of 'j is sufficiently i', 7. 'Merokoto or Mu 1 will fall. QJ) According to the present invention as shown above, if the magnetic flux is <% 1. Temporary 1it) 1 power can be increased, so 7- Tara? White 93 u f#,'
c (tllll d43monthIJ? 17'r) R: and i1゛2-goni f5 can be made into two lines.

[Brief explanation of the drawing]

Figure 14S1 is one example of the present invention.
j3i't! :'; 0) Simple 1'l>: fV did k no l;:J s No. 21.1 is the funeral 112g1's 1iij! The view from Lesson II-I+, Figure 3 is 4゛ [parent diagram, public i'! + 4171 is the fruit of the ability of the present invention: '1ft + example recommendation (ηj2g simple + H<
Figure 5 is an exploded diagram of the flat coil 3o, Figure 6 is a diagram to clarify the IIX f=1 state of the yoke 12 and the flat coil 3o, Figure 5 is an exploded diagram of the flat coil 3o. Figure 7 shows a further practical example of the 1ull circuit breaker of the present invention.
11111i5 is an llli surface view. ■...Break switch, 3...1N constant contact plate, 3d...U
Character capital, 5.6...-L contact, 9.11...tll
i Auxiliary contact, 12... Yoke, 13.14... Light 1 part, 15, 3()... Coil, 20... Arc extinguishing device, 40
...Consolidation Department Agent, Attorney at Law, Kei Nishi - I'll Figure 3, Figure 4, Figure 5, Figure 6, 0 Procedures Amendment Written on May 9, 1981, Commissioner of the Patent Office, Mr. 1. Indication of the case Patent application No. 58-215738 2. Name of the invention Circuit breaker 3. Person making the amendment Relationship to the case Applicant address Name (583) Matsushita Shoko Co., Ltd. Representative 4, Agent address Osaka City 1-13-38 Nishihonmachi, Nishi-ku, Ministry of Shinko Industrial Building Specifications Column of Claims and Column 7 of Detailed Description of the Invention, Contents of Amendments (11 The scope of claims shall be as shown in the attached sheet. (21 Specifications) In Book 200, lines 5 and 6, “
Correct "main contact" to "auxiliary contact". (3) In the 7th line of page 2 of the specification, the phrase "auxiliary contact and arc extinguisher [bar side]" is corrected to "arc extinguisher side." (4) In the third line of the fourth page of the specification, the term "auxiliary movable plate" is corrected to "auxiliary movable contact plate." (5) On page 4, line 6 of the specification, the phrase "auxiliary movable plate" is corrected to "auxiliary movable contact plate." (6) In the specification, page 5, lines 17 to 18, “
At the bottom... it's connected. ” will be deleted. (7) The 7th line on page 6 of the specification is corrected as follows. It flows with the record. (8) In the 12th line of statement box 8, correct "manual hours" to "work hours." The claims above include main contacts that face each other so as to be separated from each other, and are electrically connected to each of the main contacts as a pair, and are connected together with the main contacts at the rated current, and the main contacts are open. Then, they connect the auxiliary contact with the j'Jil pole, the coil provided on the auxiliary contact side and into which the yoke is inserted, and the electrical connection of one of the main contact and the auxiliary contact in parallel via the coil. In the circuit breaker, when the large current flows and the auxiliary contact opens, the arc generated at the auxiliary contact is transferred to the arc extinguishing device side by the magnetic and pneumatic power generated by the magnetic flux of the coil. The yoke includes a pair of legs and a connecting part that connects the legs, the coil is wound around the legs, and the tip of the fixed contact plate to which the main contact is fixed is formed in a U-half shape. A circuit breaker characterized by:

Claims (1)

[Claims] Main contacts facing each other so as to match each other, and a pair of electrical contacts connected to each main contact.
7', during the first flow, it is connected together with the main contact, and after the main contact is fully open, lr441! an auxiliary contact that
A coil provided on the side of the auxiliary contact and into which the yoke is inserted;
Continue +? :Jp M+l via J Nishicoil (
+Ma 1;(1(), the large current flows and the main contact becomes 1ill A).
A circuit breaker jv (in the device (, -
), the yoke includes a pair of 14 points and a 1 ill connection portion connecting the legs, the coil is wound around this 11111 portion, and a fixed focus plate tip ff where the main contact is identified; A circuit breaker characterized by having a U-shaped At.